Final answer:
Sara Lee's use of focus groups is an example of concept testing, meant to evaluate consumer responses before market introduction.
Step-by-step explanation:
Sara Lee's use of the focus group to help develop the package is an example of concept testing. Concept testing is a process used to evaluate consumer response to an idea before introducing a product or service to the market. In the mini-case study provided, while the focus group's goal was to solicit input for developing strategies to address needs, the actual execution didn't yield the innovative feedback expected due to the familiarity of the participants with such discussions, leading to reaffirmation of current practices rather than generating new insights.